EmojiPro is very similar a tweak to Emoji2 for iOS 5.1 +: This tweak is in fact to add 300 new emoticons to your jailbroken iPhone with iOS 5.1 or later version.
Introduced by EmojiPro emoticons can be seen exclusively on iOS and Mac OS X Lion Mountain. These emoticons can only be used in certain applications, while others do not support them because of their technical nature.
If you are interested, you can buy EmojiPro from BigBoss repository on Cydia. Tweak has a cost of $ 0.99 and is compatible with iOS 5.1 and later versions.